We're dividing 278365 by 78 
The aim is to understand the frequency of 78 in 278365.

On to step 1:
78 can be fit into 2 0 times, resulting in a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Include the next digit (7) from the dividend after 2, then repeat: 27 / 78

Going ahead to step 2:
The number 78 fits into 27 0 times, leaving a remainder of 27.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 27, we get 27.
Bring next digit (8) of the dividend behind the 27 and repeat the process: 278 / 78

Going ahead to step 3:
278 divided by 78 is 3 with a remainder of 44.
Write down 3 as next digit of the result. 
Result so far: 3.0
If we take 234 away from 278, we end up with 44.
Bring next digit (3) of the dividend behind the 44 and repeat the process: 443 / 78

Advancing to step 4:
When dividing 443 by 78, we get 5 with a remainder of 53.
The number 5 becomes the next digit in our result. 
Result so far: 35.0
If we subtract 390 from 443, we get 53.
Fetch the next digit (6) from the dividend, attach it to 53 and continue: 536 / 78

Moving on to step 5:
78 can be fit into 536 6 times, resulting in a remainder of 68.
Put 6 as the next digit of the answer. 
Result so far: 356.0
If we take 468 away from 536, we end up with 68.
Take the next digit (5) from the dividend and append it to 68, then repeat: 685 / 78

Step 6:
The number 78 fits into 685 8 times, leaving a remainder of 61.
Record the quotient 8 as the next digit in the result. 
Result so far: 3568.0
If we take 624 away from 685, we end up with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Advancing to step 7:
78 goes into 610 7 times with a remainder of 64.
The next digit of our result is 7. 
Result so far: 3568.7
Deduct 546 from 610 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

On to step 8:
78 goes into 640 8 times with a remainder of 16.
Record the quotient 8 as the next digit in the result. 
Result so far: 3568.78
Subtracting 624 from 640 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 9:
78 can be fit into 160 2 times, resulting in a remainder of 4.
The number 2 becomes the next digit in our result. 
Result so far: 3568.782
Deduct 156 from 160 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 10:
40 divided by 78 is 0 with a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 3568.782
Subtracting 0 from 40 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 11:
When dividing 400 by 78, we get 5 with a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 3568.78205
Subtract 390 from 400 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 12:
78 goes into 100 1 times with a remainder of 22.
Write down 1 as next digit of the result. 
Result so far: 3568.782051
Deduct 78 from 100 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 13:
78 can be fit into 220 2 times, resulting in a remainder of 64.
Put 2 as the next digit of the answer. 
Result so far: 3568.7820512
The remainder is 64 after subtracting 156 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Step 14:
If we divide 640 by 78, we get 8 and a remainder of 16.
Record the quotient 8 as the next digit in the result. 
Result so far: 3568.78205128
Deduct 624 from 640 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

After the division, we end up with 3568.78205128 and a remainder of 1.6e-08.